Licenses

Author: chinmaygarde

ci/licenses_golden/licenses_flutter

@@ -107,6 +107,7 @@ FILE: ../../../flutter/flutter_frontend_server/lib/server.dart
 FILE: ../../../flutter/fml/backtrace.cc
 FILE: ../../../flutter/fml/backtrace.h
 FILE: ../../../flutter/fml/backtrace_stub.cc
+FILE: ../../../flutter/fml/backtrace_unittests.cc
 FILE: ../../../flutter/fml/base32.cc
 FILE: ../../../flutter/fml/base32.h
 FILE: ../../../flutter/fml/base32_unittest.cc